Federal authorities in New York and North Carolina are investigating online communications between congressman Anthony Weiner and a 15-year-old girl.

US official says the newly discovered emails emerged through the FBI’s separate sexting probe of former congressman Anthony Weiner, the estranged husband of close Hillary Clinton confidant Huma Abedin. (Source: AP)

A US official says newly discovered emails that have prompted a new FBI review of the Hillary Clinton email investigation came from a separate sexting probe of former congressman Anthony Weiner.

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Federal authorities in New York and North Carolina are investigating online communications between Weiner and a 15-year-old girl.

The official said on Friday that the emails referenced by FBI Director James Comey surfaced during that investigation. The official was familiar with the investigation but was not authorized to discuss the matter by name and spoke on condition of anonymity.

Comey told members of Congress on Friday that newly discovered emails believed to be related to the Clinton case were prompting a new review.